pls, u rly don't get it?
spoilers
After being locked in broom storage (? i don't remember exactly what the room was called) Chase lost his mind, he is permanently broken and has mental illnesses probably to the rest of his life
After conversation next to the mine entrance he got pissed or just offended and left them. Most likely Chase don't know about Flynn who currently haunt mines. Idk if you played Arches (you definitely should though), I suppose no, so Cameron (coyote) is smth like medium and psycho, he can see dead people from the past in Echo.
Otter didn't left them to sacrifice :)
it was more like Ight imma head out xd